injured 2.________ a doctor can be found. Of course, the illness or injury is not serious.

　　Now let's talk about first aid for burns. You have three layers of skin that protect 3______ ( you) against disease, poisons and the 4________ ( harm) rays from the sun. Your skin also gives you your sense of touch . First aid is a very important step in the treatment of burns. People can get burned by many things. 5_____ as hot liquids, steam, fire, radiation, the sun, electricity or chemicals 6______ are three types of burns, which 7__________ ( call) first, second or third degree burns, 8__________( depend) on which layers of the skin are burned. Different degree burns can be treated in 9____ different way. Let's keep these things 10____ mind .